From Halopedia, the Halo wiki
This article is about protocol. For other uses of the term, see Crimson.
CRIMSON was a codeword classification protocol used by the United Nations Space Command. In United Nations Space Command Transmission 116749-09, Vice Admiral Preston Jeremiah Cole instructed Admiral Dale Kilkin to encode his requests using the CRIMSON protocol.
List of appearances
- Halo: Evolutions - Essential Tales of the Halo Universe
- The Impossible Life and the Possible Death of Preston J. Cole (First appearance)